Advanced iron boride coatings to enhance corrosion resistance of steels in geothermal power generation

2020 ◽  
Vol 119 (8) ◽  
pp. 462-481
Author(s):  
Eugene Medvedovski
Keyword(s):  
Power Generation ◽  
Corrosion Resistance ◽  
Iron Boride ◽  
Boride Coatings ◽  
Geothermal Power

Evaluation of the corrosion resistance of iron boride coatings obtained by paste boriding process

2006 ◽  
Vol 201 (6) ◽  
pp. 2438-2442 ◽  
Author(s):  
I. Campos ◽  
M. Palomar ◽  
A. Amador ◽  
R. Ganem ◽  
J. Martinez
Keyword(s):  
Corrosion Resistance ◽  
Iron Boride ◽  
Boride Coatings ◽  
Boriding Process

ALLEGHENY LUDLUM AL 29-4C

Alloy Digest ◽  
1993 ◽  
Vol 42 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Exchangers ◽  
Power Plants ◽  
High Strength ◽  
Corrosion Resistant ◽  
Resistant Alloy ◽  
Corrosion Resistant Alloy ◽  
Geothermal Power

Abstract AL 29-4C is a highly corrosion resistant alloy with a relatively high strength. This combination allows the use of lighter gage tubes, and has led to its use in the brine heat exchangers of geothermal power plants. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming and joining. Filing Code: SS-554. Producer or source: Allegheny Ludlum Corporation.

Geothermal power generation in United States

1993 ◽  
Vol 81 (3) ◽  
pp. 434-448 ◽  
Author(s):  
G.W. Braun ◽  
H.K. McCluer
Keyword(s):  
United States ◽  
Power Generation ◽  
Geothermal Power

Economic evaluation of geothermal power generation, heating, and cooling

Energy ◽  
1999 ◽  
Vol 24 (6) ◽  
pp. 501-509 ◽  
Author(s):  
Mehmet Kanoğlu ◽  
Yunus A Çengel
Keyword(s):  
Power Generation ◽  
Economic Evaluation ◽  
Heating And Cooling ◽  
Geothermal Power

Analysis of the Thermodynamic Performance of Kalina Cycle System 11 (KCS11) for Geothermal Power Plant: Comparison With Kawerau ORMAT Binary Plant

2009 ◽  
Author(s):  
Xinli Lu ◽  
Arnold Watson ◽  
Joe Deans
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Heat Source ◽  
Gas Turbines ◽  
Effective Means ◽  
Specific Power ◽  
Kalina Cycle ◽  
Geothermal Power Plant ◽  
Thermodynamic Performance ◽  
Geothermal Power

Since the first geothermal power plant was built at Larderello (Italy) in 1904, many attempts have been made to improve conversion efficiency. Among innovative technologies, using the Kalina cycle is considered as one of the most effective means of enhancing the thermodynamic performance for both high and low temperature heat source systems. Although initially used as the bottoming cycle of gas turbines and diesel engines, in the late 1980s the Kalina cycle was found to be attractive for geothermal power generation [1, 2, 3]. Different versions (KSC11, KSC12 and KSC13) were designated. Comparison between Kalina cycle and other power cycles can be found in later studies [4, 5, 6]. Here we examine KSC11, because it is specifically designed for geothermal power generation, with lower capital cost [3]. We compare this design with the existing Kawerau ORMAT binary plant in New Zealand. In addition, parametric sensitivity analysis of KCS11 has been carried out for the specific power output and net thermal efficiency by changing the temperatures of both heat source and heat sink for a given ammonia-water composition.

Fractures in Granite: Results from United Downs Deep Geothermal well UD-1

2021 ◽  
Author(s):  
Mark W. Fellgett ◽  
Richard Haslam
Keyword(s):  
Power Generation ◽  
Stress Field ◽  
Fault Zone ◽  
Regional Scale ◽  
Complex Nature ◽  
Fracture Density ◽  
Production Well ◽  
Borehole Breakouts ◽  
Tensile Fractures ◽  
Geothermal Power

<p>The geothermal potential of the granites of SW England has long been known. The first significant exploration of the resource was in the Carnmenellis Granite under the ‘Hot Dry Rock (HDR) Project’ during the 80’s and early 90’s. Following completion of the HDR project there was little further exploration in the area for geothermal power generation. Recently however, development of the United Downs Deep Geothermal Power (UDDGP) project marks a significant leap forward, and this aims to be the first commercial project to explore deep geothermal power generation in SW England.</p><p> </p><p>The UDDGP project targets the Porthtowan Fault zone, a regional scale NW to NNW striking strike-slip fault that is inferred to transect the NE margin of the Carnmenellis Granite. Two directional wells were drilled to intersect this fault zone, maximising the surface area of the fault exposed. A production well with a measured depth of 5275 m true vertical depth of 5054 m and an injection well vertically above the production well at a measured depth of 2393 m and a true vertical depth of 2214 m. A full suite of geophysical wireline logs were collected for the production well, including borehole image logs from 900 mMD to 5160 mMD (900 - 4097mTVD).</p><p> </p><p>Interpretation of the borehole imaging across the 4260 m identified a total of 12031 discontinuities. The features were classified using a simple schema and provide new insights into the complex nature of faulting and fracturing within the Granite. Stress field indicators including Borehole Breakouts and Drilling Induced Tensile Fractures (DIFs) were also interpreted.</p><p> </p><p>The orientations of the borehole breakouts and DIFs are consistent and are comparable to previous measurements in the region and the regional stress field, indicating the direction of maximum compression is, approximately horizontal trending towards 320°.</p><p> </p><p>The data show variable fracture density along the imaged section of the well with the maximum density tentatively associated with discreet fault zones. At least 3 fracture sets are identified with the largest concentration of fractures approximately parallel to inferred Porthtowan Fault Zone, suggesting UD-1 intersected the target fault zone. Key fracture attributes are explored and discussed including orientation, spacing, intensity, and spatial correlation.</p>

Sign in / Sign up

Export Citation Format

Share Document